ADHD, dyslexia and dyscalculia: why they often show up together

Many students have more than one difference at the same time. ADHD frequently co-occurs with specific learning difficulties such as dyslexia (reading and spelling) and dyscalculia (number sense and maths). It is also common for a student to be noticed for one and the other to go unseen.

The three in short

• ADHD affects attention, impulse control and self-management.
• Dyslexia affects accurate and fluent reading and spelling, usually linked with processing the sounds in words.
• Dyscalculia affects the understanding of numbers and quantities, and the learning of maths facts and procedures.

They are separate conditions with different causes. They can sit side by side, and each makes the other harder to spot.

Why the overlap confuses adults

A student who avoids reading aloud may be called "careless" or "distracted" when the real issue is decoding. A student who loses their place in a sum may be accused of not concentrating when the underlying problem is number sense. In the other direction, a student with ADHD may read perfectly well but skip lines, miss words and appear dyslexic.

Clues worth noting

• Reading is slow and tiring even for short passages, despite good understanding when listened to.
• Spelling the same word differently on the same page.
• Struggling to remember tables, or counting on fingers long after peers have stopped.
• Doing well in discussion but poorly in written tests.

What to do

• Ask the school about a psychoeducational assessment, which looks at learning and attention together.
• Learn about accommodations your board allows for exams, such as extra time or a scribe, where a formal diagnosis exists. Check the current rules with the board and your school's coordinator.
• Use tools that offer multiple ways in: listening as well as reading, visual explanations as well as text, and answers that can be typed or spoken.

For everyday study, a clear layout, plenty of white space, readable fonts and short chunks of text lower the load for readers who find dense pages draining. ZEKO's reading-friendly fonts and low-clutter screens are designed with that in mind. They do not replace a proper assessment or specialist teaching.